/*
 * Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <arch_helpers.h>
#include <auth_mod.h>
#include <bl1.h>
#include <bl_common.h>
#include <console.h>
#include <debug.h>
#include <platform.h>
#include "bl2_private.h"


/*******************************************************************************
 * The only thing to do in BL2 is to load further images and pass control to
 * next BL. The memory occupied by BL2 will be reclaimed by BL3x stages. BL2
 * runs entirely in S-EL1.
 ******************************************************************************/
void bl2_main(void)
{
    entry_point_info_t *next_bl_ep_info;

    NOTICE("BL2: %s\n", version_string);
    NOTICE("BL2: %s\n", build_message);

    /* Perform remaining generic architectural setup in S-EL1 */
    bl2_arch_setup();

#if TRUSTED_BOARD_BOOT
    /* Initialize authentication module */
    auth_mod_init();
#endif /* TRUSTED_BOARD_BOOT */

    /* Load the subsequent bootloader images. */
    next_bl_ep_info = bl2_load_images();

#ifdef AARCH32
    /*
     * For AArch32 state BL1 and BL2 share the MMU setup.
     * Given that BL2 does not map BL1 regions, MMU needs
     * to be disabled in order to go back to BL1.
     */
    disable_mmu_icache_secure();
#endif /* AARCH32 */

    console_flush();

    /*
     * Run next BL image via an SMC to BL1. Information on how to pass
     * control to the BL32 (if present) and BL33 software images will
     * be passed to next BL image as an argument.
     */
    smc(BL1_SMC_RUN_IMAGE, (unsigned long)next_bl_ep_info, 0, 0, 0, 0, 0, 0);
}
